Mercurial > octave-antonio
annotate scripts/image/__img_via_file__.m @ 8920:eb63fbe60fab
update copyright notices
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Sat, 07 Mar 2009 10:41:27 -0500 |
| parents | 7d48766c21a5 |
| children |
| rev | line source |
|---|---|
| 8920 | 1 ## Copyright (C) 2006, 2007, 2009 S�ren Hauberg |
| 6164 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 6164 | 9 ## |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 6164 | 18 |
| 6945 | 19 ## Undocumented internal function. |
| 20 | |
| 6164 | 21 ## -*- texinfo -*- |
|
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7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
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22 ## @deftypefn {Function File} {} __img_via_file__ (@var{x}, @var{y}, @var{im}, @var{zoom}, @var{command}) |
|
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
|
23 ## Undocumented internal function. |
|
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
|
24 ## @end deftypefn |
|
7d48766c21a5
use consistent format for doc strings of internal functions
John W. Eaton <jwe@octave.org>
parents:
7017
diff
changeset
|
25 |
| 6164 | 26 ## Display an image by saving it to a file in PPM format and launching |
| 27 ## @var{command}. | |
| 28 ## | |
| 29 ## The @var{command} must be a format string containing @code{%s} and | |
| 30 ## possibly @code{%f}. The @code{%s} will be replaced by the filename | |
| 31 ## of the image, and the @code{%f} will be replaced by @var{zoom}. The | |
| 32 ## @var{x} and @var{y} arguments are ignored. | |
| 33 | |
| 34 function __img_via_file__ (x, y, im, zoom, command) | |
| 35 | |
| 36 ppm_name = tmpnam (); | |
| 37 saveimage (ppm_name, im, "ppm"); | |
| 38 | |
| 39 rm = sprintf ("rm -f \"%s\"", ppm_name); | |
| 40 | |
| 41 if (isempty (command)) | |
| 42 ## Different image viewer commands. | |
| 43 xv = sprintf ("xv -raw -expand %f \"%s\"", zoom, ppm_name); | |
| 44 xloadimage = sprintf ("xloadimage -zoom %f \"%s\"", zoom*100, ppm_name); | |
| 6257 | 45 im_display = sprintf ("display -resize %f%% \"%s\"", zoom*100, ppm_name); |
| 6164 | 46 |
| 47 ## Need to let the shell clean up the tmp file because we are putting | |
| 48 ## the viewer in the background. | |
| 49 status = system (sprintf ("( %s || %s || %s && %s ) > /dev/null 2>&1 &", | |
| 50 im_display, xv, xloadimage, rm)); | |
| 51 else | |
| 52 ## Does the command support zooming? | |
| 53 if (findstr (command, "%f")) | |
| 54 command = sprintf (command, zoom, ppm_name); | |
| 55 else | |
| 56 command = sprintf (command, ppm_name); | |
| 57 endif | |
| 6967 | 58 status = system (sprintf ("( %s && %s) > /dev/null 2>&1 &", command, rm)); |
| 6164 | 59 endif |
| 60 | |
| 61 ## Did the system call fail? | |
| 62 if (status != 0) | |
| 63 error ("the image viewing command failed"); | |
| 64 endif | |
| 65 | |
| 66 endfunction |